make it possible to only run some specific test by setting the ONLY environment variable. If you had theses tests
make it possible to only run some specific test by setting the
ONLY
environment variable. If you had theses tests

test/api_runner/001_create_user.yml
test/api_runner/002_update_resources.yml
test/api_runner/003_update_ratings.yml
test/api_runner/004_update_series_ratings.yml
test/api_runner/005_rateables_and_pagination.yml
test/api_runner/006_recommendations.yml
test/api_runner/007_item_predictions.yml
test/api_runner/008_discovery.yml
test/api_runner/009_cacheable_operations.yml
test/api_runner/010_fsk.yml
test/api_runner/011_misc.yml
test/api_runner/012_telekom_error_reports.yml
test/api_runner/013-extended-unpersonalized-discovery.yml
test/api_runner/014-extended-personalized-discovery.yml
test/api_runner/015_create_10000_users.yml
test/api_runner/999_delete_user.yml
test/api_runner/excludes.yml

but you only want to test the tests

test/api_runner/005_rateables_and_pagination.yml
and
test/api_runner/009_cacheable_operations.yml

you could call the tests with

ONLY=005,009 rake api:run:local

... only takes a comma separated list of substrings of the test case files

moviepilot/apirunner